Picking screen



Sept, 9.'l924. j

3. 1 5 l 6 R N O s N H Ov .J w.

Original F1101! larch l3 1922 3 sh n-sh t, 1

7/671 207': Robert mhnson lllmg l g Sept. 9, 1924. 11,. 15,913

R. w. JOHNSON rzcxnm scans Original um: Iana 13, 1922 a moiu-snuz 5 Reissued Sept. 9, .1924.

SCHAEFER CODA-NY,

ASSIGNEE.

ROBERT WILLIAM .ronnson, DECEASED, Lars or PITTSBURGH, rmwiwsyrvaum; BY

aonna'rs AND Original No. 1,431,667, dated October 10, 1922,

reissue flled r'ebruary 18, 1984.

To all whom it may concern: I

Be it known that ROBERT WILLIAM JonN- SON, deceased, late of the city of Pittsburgh,

county of Allegheny, State of Penns lvania,

did invent certain new and usef iil Im provements in Picking Screens, of which the following is a full, clear, and exact description.

p y invention relates to a screening and picking device, and articularly to a coalhandling device whi is adapted to screen be separately picked during the gradin and t e conveying consequent thereto. ther objects of my invention will appear from time to time in the course of the specification. I illustrate my invention more or less dia- 2 grammatically in the accompanying drawin s, whereinig. 1 is a plan view of the screen and picking table. 7

Fig. 2 is asection on the line 22 of Fig.-

Fig. 3 is a section on the line 3 3 of Fig.

, c I I Fig. 4 is an enlarged side along the line 44 of Fig. 3;

Fig. 5 is a view of the actuating means, and

Fig. 6 is a sectionon the line 66 of Fig. 1

view in part Like parts are illustrated by like symbols throughout the drawings and specifications.

axis of the screen.

B is the lower deck of a balanced reciprocating screen which is supported on the tracks A, as by the rollers It has a closed bottom, B, which isrbroke'n at vari ous. oints by any suitable removable gates B, 4 which overlie, res ectively, the delivery chutes B, B and The deck terminates in an inclined chute B 0 adapted to deliver, for example, to any suit able conveyin means B or directly to the railroad car Overlying the slack deck B, and adapted to be reciprocated in opposition thereto, or

OF CHICAGO, ILLINOIS,

548,148, filed larch 18, 1922. Application 1'01; Serial No. 008,698. in alternation therewith, is the upper deck mounted, for exam le, on the roller C" on the brackets C. he deck C has a nut and egg level 0 broken by the slack screen section 0*. Beyond, this section is a gate 0 overlying the ate B in the lower deck.

ve theleve C is the upper or lump level D, which is broken by a nut and eg screen section D beyond which is a second closed section D which terminates in a te D overlying the gates C" and B. $9- terminates in an inclined section or go-down plate D, down Whill material may pass to the section D, which is acontinuation of or at the same level as the sections C and C and thereafter serves as. a lump conveyor. is sectionis, in turn, broken by a gate D overlying the gate B in the lower deck, and terminates in a go-downplate or chute D which leads down to the end of the lower deck B On the deck 0, beyond the gate C is a V- shaped bafile E, the oint of the V facing toward the stream of material as it passes from right to left, as

case lump and egg, pair of lateral conveyors or wings --E and which lie. on either side of the u per cc 0, serve as inking tro hs, are supported upon I: elower dec 7 suitable frame connection. I] and each broken midway of their course by screen sections 'E', E, shown in detail in Figure 4, and by the gates E E, all three of which overlie a'hopper E, from the bottom of which are chutes E E leadin to the discharge chutes B B, respective y. The material may be passed down one or the other, under control of the swinging gate "or any other suitable means. At their lower ends .E andE- incline toward the central deck, and their inturned ends E. feed'm aterial to the lower slack'deck B ad'acent its end, or to C. v ecured to and above the upper deck' C in any suitable manner is a re Se trou h, comprising an initial single section F which inclines to the right or left as at F adjacent the baflie E and e upper ends of the troughs E E. The section F continues alongone of such troughs, while the second the other trough E,

are

section, F, parallels join the single disposal the chute G.

preferably a large or over the screen these two sections'converging as at F to section F. Material is fed mto the whole device in any suitable manner, as for example through The two decks cated on the horizontal planein opposition to each other, as for examplexthrough the I rotating shaft H, the eccentrics H H thereupon, and the pltman H H secured to the up er and lower decks, respectively. be realized that while I have illustrated a working device, the details thereof must be taken largely dia atically, and m J Yc ImEeS might be made the number, shape, esign, size and dlsposit on of parts without departing from the spirit of my invention. The use and operation of my invention are as follows: g Any mixed material, and preferably runof-mine coal, is fed uponthetop deck level as shown in Fi 1. The rotation of the shaft an the eccentrics thereim gives an irregular conveying motion, w ich need not here be describe sult being that the material on'the screen assembly p from ri ht to left; as shown in Figal and 2. If, or exam e, run-ofmine coal, of various and irre ar sizes, is fedto the screen, it passes over the screen D in the upper level Dr This is .mes screen, for example All lump sizes of- 3 inch while less upon the screen d through of 3 mch mesh. or over pass ther'eover, 'than 3 inches drops through C. This screen is a er screen an it pass the fines or slack to'the bottom level B. The intermediate sizes, that is eg and nut, pass along the second deck and through If the to C is closed, the interm ade is eflected b the bafle E to the side or picking screens E. The fines a ain pass .through the screens picked coal passes through gates E E and is deflected back to the lower level 13, as by the inwardly inclinedportions E E", or with slight modi-- fication, to the up r level. It then passes out over the fina chute-B, either ,to the conveyor 'B" or to the car to which it 'maybe loaded by an suitable means. While this picked, gra ed coal may passed through the entire screen system and to the end track or conveyor, may

" 'to cars at interme ediate diate are both left open, the graded coal passes, before pick.- ingythro B to the car X, together with. the slack. Through the gates ,E' and E it may be passed down the chutes -A and A to the car X may similarly be d'scharged either at the on track. or conveyor or to. the intermediate tracks through 0 ni nigmor closing of the gates ,B and lump coal bigger are recipro egg and the re- 'side sections adapted to receive material be tions.

or X'-.. The slack than 3 inch, or the size of the upper screen D may be dropped through the gates D, C and 13 directly to the chute B and the car X, or it may pass over the gate 1) when closed, and down the incline D,-to the second level D. The gate D furnishes means for dropping it through to the car X and if that ate isclosed it runs over the incline D an thus to the conveyor 13 and the car X.

It will thus be clear that to the first track car X either slack alone may be passed, or slack, or run-of-mine, viz: all three ades; To the second car X slack alone may bepasse'd, or picked egg alone, or picked slack, or picked run-of-mine. o I be fed picked egg, picked 1} inch lump, picked 3 inch lump, picked run-of-mine, or ack. And a similar choice is open for feed to the last car X.

An suitable 'means, not herein shown, ma provided to support the pickers which pick the coal as it passes alon various screens. The large or 3 inch may be 1 of the refuse trough. The branches F and F take care of he picking troughs E and E over which passes the coal intermediate the 3 inch lump and the slack, and the section 5 conveys away the refuse picked from the various screens' I claim:

1. A reciprocating screen comprising a central section extendingsubstantially from end to end of the screen and a plurality of side sections adapted to be supplied with material therefrom.

2. A plural level reciprocating screen com-. prising a central section and ,a plurality of from an upper level of the screen and to return it to a lower level of said screen.

3. A plural level reciprocating screen comprising a central section and a plurality of side f sections ada ted to receive material from one level of t e screen and to return it to another level of said screen;

4. A reciprocating screen comprising a central section and a plurality of side sectionsadap to receive material therefrom, and a refuse trou h adjacent and substantially parallel wit each of said side sec- 5. A reciprocating screen comprising a central section and a plurality of side sectioiis se aratetherefrom and adapted to be supplie with material therefrom, an a branched refuse trough one branch of which is adjacent and substantially parallel with each of said side sections. 7

of levels, a picking trough a acent thereto and adapted to receive material from one level of the screen and deliver it to an-' other level thereof.

7. A reciprocating screen having% pluraluni? picked directly into the sect-ion 6. A reciprocating screen having a lurality of levels, a picking trough ad'acent ereto and adapted to receive materia from deliver it to another level thereof, and a screen surface intermediate the ends of said picking trough.

8. A reciprocating screen having a lurality of levels, a picking trough a jacent thereto and adapted to receive material from one level of the screen and deliver it to another level thereof, and a delivery chute and gate therefor intermediate the ends of the picking trough.

reci rocating screen having a lurality of leve a picking trough a jacent thereto and adapted'to receive material from one level of the screen and deliver it to another level thereof, a screen surface intermediate the ends of said picking trough, and a delivery chute and gate therefor intermediate the ends of the picking trough.

10. A reciprocating screen assembly comprising upper and lower elements reciprocating inopposition to each other, adjacent ickin troughs adapted to receive material om 51o upper element and deliver it to the lower element.

11. A reciprocating screen assembly comprising upper and lower elements reciprocating in opposition to each other, and adj acent picking troughs adapted to receive material from the upper element and deliver it to the lower element, said troughs being mounted upon and reciprocating-with said lower element.

12. In a reciprocating screen, an up er level and a lower level andadjacent picking troughs, and means for diverting material conveyed along the lower level to said picking troughs, and adjacent means for lowering the material onveyed along the upper level to the lower evel.

13. In a reciprocating screen, an upper level'and a lower level and adjacent picking troughs, and means for diverting material conveyed along the lower level to said picking troughs, and adjacent means for lowering the material conveyed along the upper level to the lower leve -c0mprisinga bafl'le across said lower level and a chute adjacent and be 0nd said battle. 4

14. 1 1 1 a reciprocating screen, level and a lower level and adjacent picking troughs, and means for diverting material conveyed along the lower level to said picking troughs, adjacent means for lowering the material conveyed along the upper level an up er to the lower level, and aligned screens of varyin 15. 11 level and mesh in said levels.

a reciprocating screen, an u per a lower level and adjacent pic 'n for diverting materizfi the lower level to-said pickconveyed alon j acent means for lowering the ing troughs, a

material conveyed along the upper level to the lower level, and aligned screens of varying mesh in said levels, to ether with aligned gates in said levels and means for opening and closing them independently.

reciprocating screen assembly comprising upper and lower elements reciprocating in opposition to each other, the lower element comprisin a substantially continuous conveying sur ace, a plurality of gates therein, and means for opening and closing them independently, the upper element comprising a plurality of screening levels and gates therein in line with the gates in the lower element 17. A reciprocating screen assembly comprising upper and lower elements reciproeating in opposition to each other, the lower element comprising a substantially continuous conveying surface, a plurality of gates therein and means foropening and closing them independently, said upper element comprising a lower level and a screen at one end thereof and gates in line with the gates of the lower level, a baflle, and conveyi means adapted flected by said bafl'le, an upper level .overl ing said lower level and adapted to deliver gala} material to said lower level beyond said 18. A reciprocating screen assembly comprising upper and lower elements reciprocating in opposition to each other, the lower element comprising a substantially continuous conveying surface, a plurality of gates therein and means for opening and closing them independently, sald u er element comprising a lower level, a ba i el, conveying means .adapted to receive the material deflected by said baflie, an upper level overlying said lower level and adapted to deliver sald material to said lower level beyond said baifie, a screen in the upper level overlying the screen in the lower, and gates in the upper level overlying the gates in the lower.

reciprocating screen assembly comprising upper and lower elements recipro-' cat-ing in opposition to each other, the lower element comprising a substantially continuous conveying surface, a plurality of gates and means for opening and closing them independently, said upper element comprising a lower level and a. screen at one end thereof and gates in linewith of the lower level, a baflle, and conveying to receive the material dethe gates means adapted to receive the material dethem independentl comprising a lower evel and a screen at one a picking central section and I iii 7 lump, egg

' screen,

- central section and v above the other,

end thereof and atesin line with the gates of the lower leve a baflle, conve ing meansadapted to receive the material eflected by sai baflle, comprising a picking trough substantially par lel with said lower element and reciprocating therewith, and a screen surface intermediate the ends of such trough. 21. A reciprocating screen comprising a a plurality of side sections eitending substantially from end to end of the screen adapted to receive material therefrom and to return it to the central section.

22. A reciprocatin screen comprising a substantially from end to end of the screen adapted to receive material deflected from the. central section and adapted to deliver the material back to the central section.

- 23. A reciprocating screen comprising an upper and lower conveying level, screenin means in the ufpper level, a picking troug laterally out 0 line with said screen, and a baflle on the lower level of thescreen ada ted to guide material therefrom latera y toward the picking trough.

24. A reciprocating screen comprising and slack decks arranged one above the other, screens in the two upper decks, a picking trough arranged at one side of the center line of the screen,

egg deck adapted to deflect. material to the picking trough, a go-down plate in continuation of the lump eck beyond the bafile adapted to convey material from the lump deck down to substantially the same level as the picking trough, the picking trough being at one side yond the go down plate. v

25. A screencom risingk lump and egg decks arranged one ve t a other, a screen in the upper deck, a picking trough arranged at one side of the center hne of the a baifle on the eggudeck'adapted to deflect material to the pic trough, a godown plate in continuation o the-lump deck beyond the bafile adapted to convey material from the lum deck down to substantially the same level as the pickin trough, the picking trou h being at one si e of the lump carrying s ace beyond the go-down plate.

26. A reciprocating screen comprising lump, egg and slack decks arranged one screens in the twov upper decks, a picking trough arranged at one side of the center line of the-screen, the eggntllleck ada ted to deflect material to the pic g troug a go-down plate in continuation of the lum deck be ond the baflle adapted to convey material in the lump de down to substantially the same level as the picking trough.

27. A screen com risin lump and egg decks arrangedone a in the upper deck, apicking trough ardeflect material to the pic side sections extending.

of the lump carrying surface be-- toward the on the egg'deck beyond the screen ve t e other, a screen ranged at one side ofthe center line of the screen, a baflle on the eg deck adapted to 'ng trough, a godown late in continuation of the lump deck beyon the baflle adapted to conve from the lump deck down to su the same level as the picking trough.

materia 28. A reciprocating screen comprising.

lump and egg decks arranged one above the other, a screen in the lump deck, icking troughs arranged at either side 0 the center line of the screen, a baflle on the egg deck adapted to deflectv material to said trou he, a go-down the ump deck between the picking troughs adapted to conve material from the lump deck down to su stantially the same'level as the picking troughs, the picking troughs being located at either side of the lump carrying trough beyond the go-down plate.

29. A reciprocating screen comprising upper and lower conveying levels, a screen in the up a picking trou h located a bafie on the lower level adapted to guide material therefrom to the trough, a gate in the picking trough.

30. A reciprocating screen comprising lump, egg and slack decks arranged one above the other, screens in the two upper decks, a picking trough arranged at one side of the center line of the screen, a baflle on th eg deck ada ted to deflect material to the p10 'ng troug a o-down plate in continuation of the lump eck beyond the baflle adapted to convey material from the lump deck down to substantially the same level as the pickin trough, the picking trough being at one si e of the lump carrying surface beyond the (go-down plate, the slack deck scharge end of the screen being oi substantially the same width as the lump carrying deck, and located below the lump and egg carrying trough.

31. A reciprocating screen comprising lump, e g and slack decks arranged one above the other, screens in the lump and egg decks, picking troughs arranged at either sid of the center line of the screen, a bafll e on the egg deck beyond the screen adapted to deflect material to the picking trou hs, a

fio-down plate in continuation of the ump eck beyond the baflle and between the icking troughs adapted to convey material om 32. A reciprocating screen comprising slack decks arranged one above the other, screens in the lump and egg decks, picking troughs arranged side of the. center line of the screen,

lump, egg and adapted to deflect material to the pic a go-down plate in continuation o the lump deck beyon the bafieand between the picktantially plate in continuation of troughs, I

' same level as the ing troughs adapted to convey material from the lump deck down to substantially the icking trough, and a lums trough beyond t e go-down lplate locate between and at substantially t as the picking troughs.

3 reciprocating screen comprising lump, egg and slack decks arranged one above the other, screens in the lump and egg decks, picking troughs arranged at either side of thecenter line of the screen, a baflle on the egg deck beyond the screen adapted to deflect material to the pickin troughs, a go-down plate in continuation o the lump deck beyond the baflle and between the icking troughs adapted to convey material om the lump deck down tosubstantially the same level as the picking trough, and a lump e same level trough be ond the go-down tween an at substantiall t the picking trou hs, an a go-down late in continuation 0 such lump trough a apted to convey material therefrom down to substantially the same level as the slack deck at that oint.

Si e at Chicago, in the county of Cook and gate of Illinois, this 9th day of February, 1924.. I

ROBERTS AND SCHAEFER COMPANY. By EDWARD E. BARRETT,

Vice-President, of Robert William Johnson, de-

Elate located bee same level as Assignee ceased. Witnesses:

MARION L. HOUSE, RUTH STUART. 

